I can't Anchor build the Metaplex Core NFT project.

[solguru310]

I have one Anchor project related to Metaplex core NFT and Programmable NFT(PNFT) Staking project.

But various dependency mismatch problems have occured.
I have to use the main 5 dependencies such as 'anchor-lang', 'anchor-spl', 'mpl-core', 'mpl-token-metadata', 'solana-program'.
To build this Metaplex Core NFT and PNFT project correctly, Which dependency versions can I use?

I've already changed the version of dependencies, but I didn't find them stable.
And hence I couldn't build my project yet.

Please help me asap.
Looking for your response.

Regards

[Jars1987]

Were you bale to get a response?
Having the same issue with

anchor-lang = { version = "0.30.1", features = ["init-if-needed"] }
mpl-core = { version = "0.9.0", features = ["anchor"] }

[mwaa]

@Jars1987 Version 0.8.0 built successfully for me.

cargo add mpl-core@"0.8.0" --features anchor

P.S I haven't dug into changes introduced in version 0.9.0 to determine what is the difference

@blockiosaurus I think the latest crate has a breaking change with anchor version 0.30.1. I might be wrong

[Jars1987]

Yeah, I had to downgrade it to 0.8.0

So I moved on. But wold like to know what changed

[blockiosaurus]

Thanks for catching this. Working on a fix now.

[ShaikZakir03]

Same error even when i downgrade it..please help

[hasip-timurtas]

Hey, I opened PR #237 to fix the dependency conflict.

It updates the solana-program version in the Rust client to match what’s used in the program itself (^1.17), which solves the Pubkey type conflict and lets Anchor projects build properly with MPL Core.

[98prabowo]

I also have the same dependency conflict. Is there any stable version to use with the latest anchor?

TL,DR

Two different Pubkey types in play:

• solana_program::pubkey::Pubkey → what Anchor expects
• solana_pubkey::Pubkey (aliased as __Pubkey) → what mpl-core v0.10.1 uses

Cargo.toml

[dependencies]
anchor-lang = { version = "=0.31.1", features = ["init-if-needed"] }
mpl-core = { version = "0.10.1", features = ["anchor"] }

Error

$ anchor build

error[E0308]: mismatched types
   --> src/hooked/mod.rs:106:13
    |
105 |         fn owner() -> Pubkey {
    |                       ------ expected `anchor_lang::prelude::Pubkey` because of return type
106 |             crate::ID
    |             ^^^^^^^^^ expected `Pubkey`, found `__Pubkey`
    |
    = note: `__Pubkey` and `Pubkey` have similar names, but are actually distinct types
note: `__Pubkey` is defined in crate `solana_pubkey`
   --> src/lib.rs:166:1
note: `Pubkey` is defined in crate `solana_program`
   --> src/pubkey.rs:87:1

error[E0308]: mismatched types
   --> src/hooked/mod.rs:128:13
    |
127 |         fn owner() -> Pubkey {
    |                       ------ expected `anchor_lang::prelude::Pubkey` because of return type
128 |             crate::ID
    |             ^^^^^^^^^ expected `Pubkey`, found `__Pubkey`
    |
    = note: `__Pubkey` and `Pubkey` have similar names, but are actually distinct types
note: `__Pubkey` is defined in crate `solana_pubkey`
   --> src/lib.rs:166:1
note: `Pubkey` is defined in crate `solana_program`
   --> src/pubkey.rs:87:1

For more information about this error, try `rustc --explain E0308`.
error: could not compile `mpl-core` (lib) due to 2 previous errors